#main {
    width: 100%;
    height: 1500px;
    background-image: url("../images/bg20170524.jpg");
    background-repeat: no-repeat;
    background-position-x: 50%;
    background-position-y: 0;
    background-color: #e6ecea;
}#main-part{
    position: relative;
    height: 71px;
    width:85%;
    background-repeat: repeat-x;
    margin: auto;
    color: #bbb;
    background-image: url("../images/active-sprit.png");
}
#main-part h2{
    width: 230px;
    position: absolute;
    top: 50%;
    left: 25px;
    margin: -15px 0 0;
    height: 29px;
    color: #cfd7da;
    font-size: 20px;
    text-indent: -9999px;
    background-position: 0 100%;
    background-image: url("../images/active-sprit.png");
}
#main-part .list{
    float: right;
    margin-top: 25px;
    margin-right: 15px;
}
#main-part .this-active{
    position: absolute;
    left: 500px;
    top: 0;
    background-color: #2FC3A2;
    color: #fff;
    height: 100%;
    padding-top:25px ;
    padding-right: 10px;
    padding-left: 10px;
    box-sizing: border-box;
    cursor: pointer;
}
#mess{
    width: 85%;
    margin: auto;
}
#mess ul{
    margin-top: 15px;
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
}
#mess ul li div{
    width: 310px;
    height: 276px;
}
#mess ul li{
    width: 310px;
    height: 276px;
    overflow: hidden;
    margin-bottom: 25px
}
#mess ul li .mask{
    background-color: rgba(47,195,162,0.6);
    transition-duration: 500ms;
    position: relative;
}
#mess ul li .message{
    background-color: #fff;
}
#mess ul li .message div{
    padding: 5px;
}
#mess ul li .message h6{
    font-size: 18px;
    margin: 0 0 1px;
    color: #2fc3a2;
    width: 100%;
}
#mess ul li .message p {
    display: block;
    color: #b4b4b4;
    margin: 0 0 15px;
    font-size: 12px;
}
#mess ul li .message span{
    color: #6c6c6c;
    height: 54px;
    width: 100%;
    overflow: hidden;
    text-overflow: ellipsis;
    font-size: 12px;
}
#mess ul li:hover>.mask{
    transform: translateY(-276px);
}
#mess ul li .mask img{
    height: 200px;
    width: 200px;
    position: absolute;
    left:50%;
    top:50%;
    transform: translate(-50%,-50%);
}
